Bobbin-winder



NiT En Snares PATE T tries.

GEORGE V. CLAPP, OF ALLEMANOE, NORTH CAROLINA.

BOBBIN-WINDER.

SPECIFICATION forming part of Letters Patent No. 298,554, dated May 13, 1884.

Application filed August 4, 1883. (Model) 7 To all whom it may concern.-

Be it known that I, GEORGE XV. OLAPP, of

Allemance, in the county of Guilford and State of North Carolina, have invented a new and Improved Bobbin-finder, of which the following is a full, clear, and exact description.

My invention consists of a knife-edge of the traversing guide bearing on the bobbin, and a tension device on the guide, through which the thread passes with sufficient tension to cause the knife-edge to bear on the bobbin in front of the coil of thread being laid, and thus be caused to traverse suitably for and to guide any size of thread automatically.

My invention also consists of a stop device contrived to throw the winder out of gear when the bobbin is full, and enabling the winder to be geared with the sewing-machine without altering the machine or even stopping the sewing, all as hereinafter fully described, and pointed out in the claims.

Reference is to be had to the accompanying drawings, forming part of this specification, in which similar letters of reference indicate corresponding parts in all the figures.

Figure 1 is a plan view of my improved bobbin-winder, with dotted lines showing the position when it has been shifted out of gear by the stop device. Fig. 2 is a front elevation of the said improved bobbin -winder. Fig. 3 is a sectional elevation taken on line :0 .r of Fig. 2, and Fig. 4 is a sectional eleva tion of Fig. 2 on liney y. Fig. 5 is a perspective of the traverse guide-block; and Fig. 6 is a plan view of a portion of the bed-plate, showing its spring in the recess thereof.

The traversing guide-block a is pivoted on the rod 1), parallel to the center 0 and chuck d, in which the bobbin 0 is placed to be revolved by the soft-rubber wheel f, that is set in contact with the periphery of the bandwheel of the sewing-machine. Said traverse guide-block a is also fitted to slide along said pivot-rod forward and backward, and it has a knife-edge, g, resting on the bobbin. It also has a tensi on-spring, 71 under which the thread i passes on its way through the guide-notch t" to the bobbin 6, so that said guide-block will be drawn down by the thread, and its knifeedge caused to bear with some pressure on the bobbin, which will cause the said edge to run ahead of the coil, which will thus cause the traverse of the guidebloek, the movement of which will be governed entirely by the size of the thread, thus dispensing with any gears or other device to work the traverse, and avoiding the necessity of making any adjustments for thread of different sizes. Th e spring h has an adj Listing-screw, h, to regulate the tension of the thread.

The means employed for automatically throwing the winder out of gear when the bobbin is full are as follows: The base-plate 7c of the machine is pivoted on the bed-plate l, so as to swing on pivot m, as indicated by the dotted lines in Fig. 1, and a push-rod, m, is fixed in a bracket, 41, of the bed-plate, to push the plate 7: up to the stud 0, to move wheel f forward into contact with the face of the wheel of the sewingmachine, and a stop-latch, p, is provided for said push-rod, that drops behind a shoulder, q, of said rod and in front of the shoulder s of bracket or, to hold wheel f against the sewing-machine wheel. The rod at has a coiled spring, 1, on it, to act on the plate It with a cushioning effect, and the stop-latch 19 has a spring, a, that causes it to drop behind collar q when the wheel f is pushed into gear. The stoplatch p is fitted on pivot 12, and its arm w extends along under the bobbin, so that when the bobbin is full it will bear arm 20 down and raise the other end of the stop-latch from collar q. The plate is will then be shifted back by the spring a: in a recess of plate Z, throwing the wheel f out of gear with the wheel of the sewing-machine by which it is driven. a recess in the bed-plate Z and its other end connected to the base-plate 76. Thus it will be seen. that the operator may, after setting the winder in motion, proceed with his work on the sewing-machine without further attention to the winder, which will then fill the bobbin and stop itself.

Having thus described my invention, what I claim as new, and desire to secure by Letters Patent, is-

1. In abobbin-winder, the combination,with a traverse guide-block having a knife-edge, of a tension-spring for the thread on said guide- The spring a has one end secured in block, substantially as herein shown and de- 10 herein shown and described.

3. In abobbin-winder, the combination, with the bed-plate Z, provided with the bracket n and stop 0, the base-plate 7c, pivoted to said bedplate, and the spring oc,of the push-rod m, provided with shoulder q, the spring t, surrounding said rod, the latch 12, having arm w, and the springs at, substantially as herein shown and described. 1

GEORGE W. GLAPP.

Witnesses:

O. A. Boon, D. W. HUFFMAN. 

